806408 has 8 divisors (see below), whose sum is σ = 1512030. Its totient is φ = 403200.

The previous prime is 806389. The next prime is 806447. The reversal of 806408 is 804608.

It can be written as a sum of positive squares in only one way, i.e., 806404 + 4 = 898^2 + 2^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50393 + ... + 50408.

2⁸⁰⁶⁴⁰⁸ is an apocalyptic number.

It is an amenable number.

806408 is a deficient number, since it is larger than the sum of its proper divisors (705622).

806408 is a wasteful number, since it uses less digits than its factorization.

806408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100807 (or 100803 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 806408 is about 898.0022271687. The cubic root of 806408 is about 93.0789786568.

The spelling of 806408 in words is "eight hundred six thousand, four hundred eight".